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Dairy Cattle And Reproduction

Subjects : industries, dairy
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Luteolysis happens because of the ____________ hormone






2. When are dairy cattle dehorned?






3. 1. bring in new genes - 2. replace males with leg problems (difficulty breeding) Note: culling has a much greater emphasis in the dairy industry vs the beef industry.






4. Urinary calculi.






5. Sperm production






6. Important 'landmark' during palpation






7. Pulls sperm and egg together - gets body ready for pregnany - stimulates growth cells - develops mammary glands - starts to deposit fat.






8. Earlier you castrate a male - the easier it is on the animal. the longer you wait - death rates increase






9. Gonadotropic (GnRH) is (FSH and LH). Follical Stimulating (FSH) and Lutinizing Hormone (LH).






10. Failure to have both testis (gonads) descend






11. (male) Primary sex organ - produces sperm (male gamete) and male sex hormones - 2 total






12. Can produce 200 calves naturally (~100 bulls) - top 1-2% will grade like him. everything left to chance if no AI performed






13. Not being bred back into herd. horses are seasonal breeders vs. cows as anytime breeders






14. Milk made by mother which includes antibodies for the calf. MUST be given to the calf within the first 24 hrs of life. also provides calf with energy stores. effectiveness lasts from 4-8 months of age.






15. Days which have decreasing daylight hours

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16. Days which have increasing daylight hours

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17. (LH) causes female's egg to break (her period)






18. 1-2 days






19. Not under a timeline - cow can not be sold as steak






20. Animals which have many estrous periods during certain periods per year (ex: mare - ewe)






21. Hold the penis in the bulls body when not in use. releases penis before ejaculation or urination.






22. 1. sperm is not implanted in egg until hours after breeding. 2. fetal growth has not yet finished.






23. So when offspring are born - there is more food to be found for energy stores and fat deposits IN THE SPRING






24. Depository for semen during insemination. where urine leaves the body






25. Help to signal hormone levels which we need both in the brain right next to each other.






26. Why does estrus happen before ovulation?






27. What about the sperm for a bull which has been castrated but still has testicles?






28. 1-3 days






29. Can produce 200 calves naturally (~100 bulls) - top 1-2% will grade like him. everything left to chance if no AI performed






30. 114 days






31. Gonadotropic (GnRH) is (FSH and LH). Follical Stimulating (FSH) and Lutinizing Hormone (LH).






32. Look for infection - split - and rupture of the penis






33. Important 'landmark' during palpation






34. When are steers and heifers weaned from bottle feeding?






35. Knife-loose ~1wk of growth. band-loose ~2wks of growth.






36. (from Jersey Islands in Great Britain) Smallest cow - least milk - highest butterfat %






37. Start of the reproductive tract for the female. located outside of the body






38. Serves as a bone cradle for the reproductive system. used greatly in palpation as a 'landmark'.






39. 265-285 days






40. 1. brain function - 2. blood flow - 3. willing female






41. Constitute 50-90% of the volume of the ejaculate. (3 glands total: seminal vesicles - prostate gland - cowper's gland)






42. 147 days






43. Head - neck - mid-piece - tail. genetic material - has an enzyme covering that allows it to penetrate the egg






44. When are steers and heifers weaned from bottle feeding?






45. Implies the amount of estrogen production






46. Provide nourishment for the developing sperm






47. Duct which connects epididymis to urethra of the penis. transports sperm at ejaculation. cut to sterilize male.






48. Duct which connects epididymis to urethra of the penis. transports sperm at ejaculation. cut to sterilize male.






49. 1. to eliminate breeding the females at an early age - 2. makes animals less lean and provides a better cut for the market






50. Sperm is produced here